1990 4.0 Spark Plug Gap - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 10-06-2007, 11:56 AM Thread Starter
BuddhamanJB
Registered User
1997 ZJ 
 
Join Date: Jul 2007
Location: Rhode Island
Posts: 32
1990 4.0 Spark Plug Gap

I'm changing the plugs on my '90 cherokke tomm. it has a 4.0 in it and I was wondering what the GAP on the plugs should be. Thanks

BuddhamanJB is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 10-06-2007, 11:57 AM
BeachinXJ
Resident McGeek
 
BeachinXJ's Avatar
2000 XJ Cherokee 
 
Join Date: Jun 2003
Location: The Beach®
Posts: 5,836
.035

(FYI- sticker in your engine compartment should have this info on it. Up on the firewall on the drivers side. If I remember correctly).

2000 Jeep XJ - Chopped / Locked
1997 Jeep XJ - Daily Driver
2003 Dodge Ram 2500 CTD - 6-speed, 4" MBRP Turbo Back Exhaust
Join the XJ Owners Club | Download the iMarn® iPhone App!
SIRA 4x4 Offroad Association
Rule #1 - No talking about the weather!
Homepage | Jeepspace Group|Twitter!|Facebook
BeachinXJ is offline  
post #3 of 4 Old 10-06-2007, 12:09 PM Thread Starter
BuddhamanJB
Registered User
1997 ZJ 
 
Join Date: Jul 2007
Location: Rhode Island
Posts: 32
thanks alot
BuddhamanJB is offline  
post #4 of 4 Old 10-06-2007, 02:42 PM
BrunoS
Registered User
 
Join Date: Aug 2004
Location: South Bay Los Angeles, CA
Posts: 2,534
try autolite 3924, regular reach, old-school style spark plugs.

the long-reach plugs recommended in most books are TOO hot of plug (rough idle misfire) this includes autolite 985 and champion R12YC plugs...those are all long reach and if you have a rough idle when motor is warmed up...caused by too hot heat range long-reach plugs.

go to store and look at all these plugs...you'll see what i mean.

Newly Painted! Emerald Green '96 XJ 4x4 4.0 HO 5-spd
3" Lift + 31" Tires / D35 TracLok / NP231
Drilled out Stock Airbox / Gauge Cluster Upgrade
Magnaflow Muffler / High-flo Cat / MSD Coil
BrunoS is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
1990 Cherokee, no spark Leobram XJ Cherokee Technical Forum 14 08-03-2012 11:29 AM
1990 Cherokee no spark Leobram XJ Cherokee Technical Forum 1 08-24-2009 11:24 PM
1990 mid-range misfire/lose of spark xjwnnabmudder XJ Cherokee Technical Forum 1 02-24-2009 04:05 PM
1990 no spark rockford XJ Cherokee Technical Forum 12 11-08-2005 04:26 PM
Spark plug gap? muddy bike XJ Cherokee Technical Forum 2 12-17-2004 03:25 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome